Name: TikTok Spaghetti
Prep time: 25 min
Cook time: 30 min
Total time: 55 min
Cuisine: American
Ingredients: 2 tablespoons olive oil; 1 yellow onion, chopped; 1 green bell pepper, chopped; 3 cloves garlic, minced; 1 pound ground beef (80/20); 1 teaspoon Italian seasoning; 36 ounces spaghetti sauce (1 1/2 jars of 24 oz each); Salt, to taste; 12 ounces spaghetti; 4 tablespoons butter; 2 cloves garlic, minced; 2 tablespoons all-purpose flour; 2 cups heavy cream; 1 cup grated Parmesan cheese; 2 cups shredded mozzarella cheese

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I fell in love with this trend for its creamy layers of Alfredo-coated spaghetti topped with hearty red sauce and gooey mozzarella—it’s the ultimate comfort-food casserole that skyrocketed to fame on TikTok. TikTok Spaghetti

Why I’ll Love This Recipe

I adore how this recipe combines two classic pasta sauces—rich Alfredo and vibrant red sauce—in one dish. It’s meaty, ultra-cheesy, and packed with flavor. Baking everything together creates a melty, bubbly top that’s irresistibly inviting.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

Red Sauce:

Olive oil
Yellow onion
Green bell pepper
Fresh garlic
Ground beef (80/20)
Italian seasoning
Spaghetti sauce

Pasta:

Salt
Spaghetti

Alfredo Sauce:

Butter
Garlic
All-purpose flour
Heavy cream
Parmesan cheese
Mozzarella cheese

Directions

Preheat oven to 350 °F (177 °C) and spray a 9×13-inch baking dish with nonstick spray.
In a skillet, sauté chopped onion and bell pepper in olive oil until translucent, then add garlic until fragrant.
Add ground beef, cook and crumble; drain excess grease. Season with salt, pepper, Italian seasoning, and stir in the spaghetti sauce. Set aside.
Cook spaghetti in salted boiling water; drain.
In another pan, melt butter and sauté garlic briefly, then stir in flour and cook for about one minute. Remove from heat and whisk in heavy cream until smooth. Return to heat and stir in Parmesan until melted.
Combine drained pasta with the Alfredo sauce, toss to coat, then spread into the prepared baking dish.
Layer the red sauce over the pasta—do not mix. Sprinkle with mozzarella.
Bake uncovered until cheese melts and casserole bubbles, about 30 minutes. Let rest for 10 minutes before serving.

Servings and timing

This recipe yields about 8 servings.

Prep time: 25 minutes
Cook time: 30 minutes
Total time: 55 minutes

Variations

I sometimes swap in Italian sausage instead of ground beef for extra flavor. Any color bell pepper works (or I skip it if I’m not in the mood). For the Alfredo sauce, I use freshly grated Parmesan when I want it extra creamy and rich.

Storage / Reheating

Fridge: I store leftovers in an airtight container for up to 3–4 days.
Freezer: I freeze the unbaked casserole or leftovers. If baking from frozen, I let it sit at room temperature briefly and expect it to take almost twice as long in the oven.
Reheating: I reheat in the oven at 350°F until warm through or microwave individual portions.

FAQs

Can I use jarred Alfredo sauce instead of making it myself?

Yes, I often use a 15- to 17-ounce jar of Alfredo sauce when I want to save time.

Can I freeze this before baking?

Definitely. I assemble it in a freezer-safe dish, cover it well, and freeze. It’s perfect for making ahead.

How long does it last in the fridge?

I keep it in the fridge for up to 4 days. The flavors hold up really well.

Can I substitute evaporated milk for heavy cream?

I haven’t tried it myself, but I imagine it would make the sauce lighter. It may not be as rich and creamy though.

What size jar of spaghetti sauce should I use?

I use about one and a half 24-ounce jars of spaghetti sauce, so roughly 36 ounces total.

Conclusion

I’m always excited when a recipe delivers layers of comfort and flavor—and this TikTok Spaghetti does just that. It’s easy to make, crowd-pleasing, and perfect for feeding a family or prepping ahead. I’d say it’s my new favorite pasta casserole.

TikTok Spaghetti